Gas and liquid contact apparatus – Fluid distribution – Pumping
Patent
1997-08-08
1999-07-20
Woo, Jay H.
Gas and liquid contact apparatus
Fluid distribution
Pumping
261 93, 2611211, 261123, B01D 4716
Patent
active
059252901
ABSTRACT:
An apparatus and method are provided for mixing gas and liquid. An impeller is rotatably mounted inside a draft tube having a constricted section. Rotation of the impeller draws liquid down through the constricted portion of the draft tube. A gas delivery system introduces gas under the surface of the liquid downstream from the constricted portion of the draft tube to entrain the gas in the liquid by a venturi effect. The impeller creates a turbulent gas-liquid mixing zone and also projects liquid radially into the gas as it enters the draft tube. The gas-liquid venturi mixer is particularly suitable for treating industrial and municipal waste water, as well as various other liquids. Gases such as air, oxygen, hydrogen, and the like are efficiently dissolved in such liquids during operation of the gas-liquid venturi mixer.
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Hopkins Robea A.
Rhone-Poulenc Inc.
Towner Alan G.
Woo Jay H.
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